Mandrill > define

(n.) a large West African baboon (Cynocephalus, / Papio, mormon). The adult male has, on the sides of the nose, large, naked, grooved swellings, conspicuously striped with blue and red.

by Webster's Revised Unabridged Dictionary

noun

Baboon of west Africa with a bright red and blue muzzle and blue hindquarters.
- synonyms: Mandrillus sphinx